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#!/usr/bin/env python
from __future__ import print_function
import os
import shutil
from nose.tools import eq_
from nose.plugins.skip import SkipTest
import mapnik
from .utilities import execution_path, run_all
def setup():
# All of the paths used are relative, if we run the tests
# from another directory we need to chdir()
os.chdir(execution_path('.'))
def make_tmp_map():
m = mapnik.Map(512, 512)
m.background_color = mapnik.Color('steelblue')
ds = mapnik.MemoryDatasource()
context = mapnik.Context()
context.push('Name')
f = mapnik.Feature(context, 1)
f['Name'] = 'Hello'
f.geometry = mapnik.Geometry.from_wkt('POINT (0 0)')
ds.add_feature(f)
s = mapnik.Style()
r = mapnik.Rule()
sym = mapnik.MarkersSymbolizer()
sym.allow_overlap = True
r.symbols.append(sym)
s.rules.append(r)
lyr = mapnik.Layer('Layer')
lyr.datasource = ds
lyr.styles.append('style')
m.append_style('style', s)
m.layers.append(lyr)
return m
def draw_title(m, ctx, text, size=10, color=mapnik.Color('black')):
""" Draw a Map Title near the top of a page."""
middle = m.width / 2.0
ctx.set_source_rgba(*cairo_color(color))
ctx.select_font_face(
"DejaVu Sans Book",
cairo.FONT_SLANT_NORMAL,
cairo.FONT_WEIGHT_NORMAL)
ctx.set_font_size(size)
x_bearing, y_bearing, width, height = ctx.text_extents(text)[:4]
ctx.move_to(middle - width / 2 - x_bearing, 20.0 - height / 2 - y_bearing)
ctx.show_text(text)
def draw_neatline(m, ctx):
w, h = m.width, m.height
ctx.set_source_rgba(*cairo_color(mapnik.Color('black')))
outline = [
[0, 0], [w, 0], [w, h], [0, h]
]
ctx.set_line_width(1)
for idx, pt in enumerate(outline):
if (idx == 0):
ctx.move_to(*pt)
else:
ctx.line_to(*pt)
ctx.close_path()
inset = 6
inline = [
[inset, inset], [w - inset, inset], [w -
inset, h - inset], [inset, h - inset]
]
ctx.set_line_width(inset / 2)
for idx, pt in enumerate(inline):
if (idx == 0):
ctx.move_to(*pt)
else:
ctx.line_to(*pt)
ctx.close_path()
ctx.stroke()
def cairo_color(c):
""" Return a Cairo color tuple from a Mapnik Color."""
ctx_c = (c.r / 255.0, c.g / 255.0, c.b / 255.0, c.a / 255.0)
return ctx_c
if mapnik.has_pycairo():
import cairo
def test_passing_pycairo_context_svg():
m = make_tmp_map()
m.zoom_to_box(mapnik.Box2d(-180, -90, 180, 90))
test_cairo_file = '/tmp/mapnik-cairo-context-test.svg'
surface = cairo.SVGSurface(test_cairo_file, m.width, m.height)
expected_cairo_file = './images/pycairo/cairo-cairo-expected.svg'
context = cairo.Context(surface)
mapnik.render(m, context)
draw_title(m, context, "Hello Map", size=20)
draw_neatline(m, context)
surface.finish()
if not os.path.exists(expected_cairo_file) or os.environ.get('UPDATE'):
print('generated expected cairo surface file', expected_cairo_file)
shutil.copy(test_cairo_file, expected_cairo_file)
diff = abs(
os.stat(expected_cairo_file).st_size -
os.stat(test_cairo_file).st_size)
msg = 'diff in size (%s) between actual (%s) and expected(%s)' % (
diff, test_cairo_file, 'tests/python_tests/' + expected_cairo_file)
eq_(diff < 1500, True, msg)
os.remove(test_cairo_file)
def test_passing_pycairo_context_pdf():
m = make_tmp_map()
m.zoom_to_box(mapnik.Box2d(-180, -90, 180, 90))
test_cairo_file = '/tmp/mapnik-cairo-context-test.pdf'
surface = cairo.PDFSurface(test_cairo_file, m.width, m.height)
expected_cairo_file = './images/pycairo/cairo-cairo-expected.pdf'
context = cairo.Context(surface)
mapnik.render(m, context)
draw_title(m, context, "Hello Map", size=20)
draw_neatline(m, context)
surface.finish()
if not os.path.exists(expected_cairo_file) or os.environ.get('UPDATE'):
print('generated expected cairo surface file', expected_cairo_file)
shutil.copy(test_cairo_file, expected_cairo_file)
diff = abs(
os.stat(expected_cairo_file).st_size -
os.stat(test_cairo_file).st_size)
msg = 'diff in size (%s) between actual (%s) and expected(%s)' % (
diff, test_cairo_file, 'tests/python_tests/' + expected_cairo_file)
eq_(diff < 1500, True, msg)
os.remove(test_cairo_file)
def test_passing_pycairo_context_png():
m = make_tmp_map()
m.zoom_to_box(mapnik.Box2d(-180, -90, 180, 90))
test_cairo_file = '/tmp/mapnik-cairo-context-test.png'
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, m.width, m.height)
expected_cairo_file = './images/pycairo/cairo-cairo-expected.png'
expected_cairo_file2 = './images/pycairo/cairo-cairo-expected-reduced.png'
context = cairo.Context(surface)
mapnik.render(m, context)
draw_title(m, context, "Hello Map", size=20)
draw_neatline(m, context)
surface.write_to_png(test_cairo_file)
reduced_color_image = test_cairo_file.replace('png', '-mapnik.png')
im = mapnik.Image.from_cairo(surface)
im.save(reduced_color_image, 'png8')
surface.finish()
if not os.path.exists(expected_cairo_file) or os.environ.get('UPDATE'):
print('generated expected cairo surface file', expected_cairo_file)
shutil.copy(test_cairo_file, expected_cairo_file)
diff = abs(
os.stat(expected_cairo_file).st_size -
os.stat(test_cairo_file).st_size)
msg = 'diff in size (%s) between actual (%s) and expected(%s)' % (
diff, test_cairo_file, 'tests/python_tests/' + expected_cairo_file)
eq_(diff < 500, True, msg)
os.remove(test_cairo_file)
if not os.path.exists(
expected_cairo_file2) or os.environ.get('UPDATE'):
print(
'generated expected cairo surface file',
expected_cairo_file2)
shutil.copy(reduced_color_image, expected_cairo_file2)
diff = abs(
os.stat(expected_cairo_file2).st_size -
os.stat(reduced_color_image).st_size)
msg = 'diff in size (%s) between actual (%s) and expected(%s)' % (
diff, reduced_color_image, 'tests/python_tests/' + expected_cairo_file2)
eq_(diff < 500, True, msg)
os.remove(reduced_color_image)
if 'sqlite' in mapnik.DatasourceCache.plugin_names():
def _pycairo_surface(type, sym):
if not os.path.exists('../data/good_maps/%s_symbolizer.xml' % sym):
raise SkipTest
test_cairo_file = '/tmp/mapnik-cairo-surface-test.%s.%s' % (
sym, type)
expected_cairo_file = './images/pycairo/cairo-surface-expected.%s.%s' % (
sym, type)
m = mapnik.Map(256, 256)
mapnik.load_map(m, '../data/good_maps/%s_symbolizer.xml' % sym)
m.zoom_all()
if hasattr(cairo, '%sSurface' % type.upper()):
surface = getattr(
cairo,
'%sSurface' %
type.upper())(
test_cairo_file,
m.width,
m.height)
mapnik.render(m, surface)
surface.finish()
if not os.path.exists(
expected_cairo_file) or os.environ.get('UPDATE'):
print(
'generated expected cairo surface file',
expected_cairo_file)
shutil.copy(test_cairo_file, expected_cairo_file)
diff = abs(
os.stat(expected_cairo_file).st_size -
os.stat(test_cairo_file).st_size)
msg = 'diff in size (%s) between actual (%s) and expected(%s)' % (
diff, test_cairo_file, 'tests/python_tests/' + expected_cairo_file)
if os.uname()[0] == 'Darwin':
eq_(diff < 2100, True, msg)
else:
eq_(diff < 23000, True, msg)
os.remove(test_cairo_file)
return True
else:
print(
'skipping cairo.%s test since surface is not available' %
type.upper())
return True
def test_pycairo_svg_surface1():
eq_(_pycairo_surface('svg', 'point'), True)
def test_pycairo_svg_surface2():
eq_(_pycairo_surface('svg', 'building'), True)
def test_pycairo_svg_surface3():
eq_(_pycairo_surface('svg', 'polygon'), True)
def test_pycairo_pdf_surface1():
eq_(_pycairo_surface('pdf', 'point'), True)
def test_pycairo_pdf_surface2():
eq_(_pycairo_surface('pdf', 'building'), True)
def test_pycairo_pdf_surface3():
eq_(_pycairo_surface('pdf', 'polygon'), True)
if __name__ == "__main__":
setup()
exit(run_all(eval(x) for x in dir() if x.startswith("test_")))
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